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Char: n_r3964, use wait_event_interruptible 

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiri Slaby 2007-07-15 23:40:20 -07:00 committed by Linus Torvalds
parent e0955e14f7
commit 6defec139a
1 changed files with 2 additions and 12 deletions
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14
drivers/char/n_r3964.c
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@ -1071,8 +1071,6 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
struct r3964_client_info *pClient;
struct r3964_message *pMsg;
struct r3964_client_message theMsg;
DECLARE_WAITQUEUE(wait, current);
int count;
TRACE_L("read()");
@ -1086,16 +1084,8 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
return -EAGAIN;
}
/* block until there is a message: */
add_wait_queue(&pInfo->read_wait, &wait);
repeat:
__set_current_state(TASK_INTERRUPTIBLE);
pMsg = remove_msg(pInfo, pClient);
if (!pMsg && !signal_pending(current)) {
schedule();
goto repeat;
}
__set_current_state(TASK_RUNNING);
remove_wait_queue(&pInfo->read_wait, &wait);
wait_event_interruptible(pInfo->read_wait,
(pMsg = remove_msg(pInfo, pClient)));
}
/* If we still haven't got a message, we must have been signalled */